Typewriter ribbon rehabilitating



' ing ribbons I add other materials as described Patented Aug. 25,. 1936 UNITED STATES PATENT oFF cE z,0s1.4z.@ 'rr'rnwammamaona'rme Valentin Diem, Gapan, M

My invention relates generally to means for rejuvenating ink bearing printing devices.- and includes a method and substance for rehabilitating particularLv typewriter ribbons, and an important object of my invention is to provide for rehabilitating typewriter ribbons and the like at the lowest possible cost and without having recourse to the complicated and not easily managed processes which have sometimes been applied for this purpose.

It is also an important object of my invention to provide a substance for application to typewriter ribbons and the like to rejuvenate and rehabilitate the same, which substance consists principally of only one material, the said one material being entirely efiective for the p rpose on. Hence I do not claim broadly the rejuvena tion of typewriter ribbons and the like, but I claim to be the first person to discover and employ a single material for rehabilitating typewriter ribbons which is entirely effectivefor this purpose, without recourse to the relatively complicated and expensive compositions and compounds which have been and are now being used for this purpose.

'The single material which-I utilize is cocoanut oil, and I do not find it necessary to add anything to the cocoanut oil to render the same entirely efiective for the D l se, although in rehabilitatbelow.

I treat discarded typewriter ribbons which have been cast aside as inadequate to produce a clear and full printing, by applying to that face of the ribbon which is struck by the type, a coating of my cocoanut oil substance.

When the cocoanut oil substance has had time to enter the pores of the typewriter ribbon material, I scrape or otherwise remove from the said face of the-ribbon the surplus cocoanut oil.

I then either permit the ribbon to stand a Appl cation September, 1933,

, suitable form of pressing iron giving an even temperate heat. g 5 These steps'can be carried on while the ribbon is being spooled from one reel to the other, or the entire process may be carried out with the ribbon in an unwound condition and when the process is completed, it may be rewound upon the reel 10 and is ready for application to a typewriter. I find that as a result of the process described, if 1 the ribbon has not been too greatly mutilated, that substantially all of its original capability of printing clear andi'ull typed impressions is re- 15 stored. to it, so that its original usefulness is restored to it. Because of the small cost of operating the process of the invention and applying the necessary cocoanut oil substance, the cost of rejuvenating typewriter ribbons and the like is so 20 low as to put an end to the practice of discarding typewriter ribbons as soon as they begin to print faintly or with reduced sharpness.

It will be observed that the process of the invention contemplates the application of the 25 cocoanut oil or of said substance not only subsequent to the removal of the typewriter ribbon from the machine, but the cocoanut oil or said substance is equally adapted to be applied by devices mounted on the typewriter for applying rejuvenating fluid to the ribbon as it is being used in the machine. While the most spectacular and satisfactory results are obtained with the ribbon removed from the typewriting machine, rejuvenating of the ribbon and preserving the condition thereof can be carried out by any suitable means, several types of which are in existence, for rejuvenating the ribbon as it passes through the machine without the removal of the ribbon therefrom.

- 40 The cocoanut oil substance referred to is composed substantially of thefollowing ingredients and proportions After these ingredients have been thoroughly mixed together for a period of from one half hour to an hour, heat is applied thereto to bring thesametoaboiLafterwhichitispei-mitted'to 55- cool but not become cold. The ribbons are soaked in the hot substance. When the ribbons have been adequately saturated-in that manner they are removed and pressed with a hot iron between ,flannel cloths.

ingredients and in the sequence and duration 'ofsteps and operations within the spirit of the invention and the scope of the subjoined claims.

What is claimed is: p 1. A substance for treating used typewriter ribbons to rejuvenate the same, said substance containing approximately 200 grams of cocoanut "Oil, 7.5 grams of sulphuric acid, 20 grams lamp black, and 0.10 gram of gum arabic. V

2. A substance of the character described comprising the resultant obtained by boiling the product of a mixture of 200 grams 0! cocoanut oil,

20 grams of lamp black, 0.10 grain of gum arabic,

and 7.5 grams of sulphuric acid.

ribbon, said process consisting of applying .a

quantity of the reaction product of a boiled mixture of approximately 200 grams of cocoanut oil, 7.5 grams of sulphuric acid, 20 grams of lamp black, and 0.10 gram of gum arabic while warm to the used ribbon so as to saturate the same, then removing excess product and fixing the remainder of the product in the ribbon by pressing the ribbon with heat between absorbent pressing members.

4. A method of making a typewriter ribbon rehabilitating substance, said method comprising forming a mixture of approximately 7.5 grams of sulphuric acid, 200 grams of cocoanut oil, 20 grams of lamp black, and 0.10 gram of gum araperiod of about one-half hour to one hour. then heating the mixture. to a boil, then permitting the .to cool.

5. A typewriter ribbon rehabilitating substance comprising the reaction product of a boiled mixture of 7.5 grams of sulphuric acid, 200 grams of cocoanut oil, 20 grams of lamp black, and 0.10 gram of gum arable.

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' bic, then permitting the mixture to stand for a 

